Dec 02 18:30:01.145 INFO testing rustep-0.1.2 against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 02 18:30:01.145 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-0/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 02 18:30:01.688 INFO [stdout] 53ac8f7b92bd2c8bc03d5574c217554966478cecb35f4bfe7bcadf39c4b85bc2
Dec 02 18:30:01.691 INFO running `"docker" "start" "-a" "53ac8f7b92bd2c8bc03d5574c217554966478cecb35f4bfe7bcadf39c4b85bc2"`
Dec 02 18:30:04.390 INFO [stderr] usermod: no changes
Dec 02 18:30:04.663 INFO [stderr]    Compiling enumflags v0.3.0
Dec 02 18:30:04.666 INFO [stderr]    Compiling enumflags_derive v0.4.1
Dec 02 18:30:04.666 INFO [stderr]    Compiling num-derive v0.2.3
Dec 02 18:30:19.563 INFO [stderr]    Compiling rustep v0.1.2 (/source)
Dec 02 18:30:21.931 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 02 18:30:21.931 INFO [stderr]   --> src/lib.rs:49:1
Dec 02 18:30:21.932 INFO [stderr]    |
Dec 02 18:30:21.932 INFO [stderr] 49 | #![feature(try_from)]
Dec 02 18:30:21.932 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^
Dec 02 18:30:21.932 INFO [stderr] 
Dec 02 18:30:21.944 INFO [stderr] error: aborting due to previous error
Dec 02 18:30:21.945 INFO [stderr] 
Dec 02 18:30:21.945 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 18:30:21.959 INFO [stderr] error: Could not compile `rustep`.
Dec 02 18:30:21.959 INFO [stderr] 
Dec 02 18:30:21.959 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 18:30:21.962 INFO [stderr] su: No module specific data is present
Dec 02 18:30:23.483 INFO running `"docker" "inspect" "53ac8f7b92bd2c8bc03d5574c217554966478cecb35f4bfe7bcadf39c4b85bc2"`
Dec 02 18:30:23.831 INFO running `"docker" "rm" "-f" "53ac8f7b92bd2c8bc03d5574c217554966478cecb35f4bfe7bcadf39c4b85bc2"`
Dec 02 18:30:24.142 INFO [stdout] 53ac8f7b92bd2c8bc03d5574c217554966478cecb35f4bfe7bcadf39c4b85bc2